Hourly Weather | Today Sunday, December 14, 2025
Stamford, Connecticut
4 PM
Cloudy Weather
25°
Feels Like
34
Humidity: 57%
Wind: 18 mph
UV Index: 0
5 PM
Cloudy Weather
25°
Feels Like
37
Humidity: 58%
Wind: 17 mph
UV Index: 0
6 PM
Snowy Weather
23°
Feels Like
40
Humidity: 60%
Wind: 17 mph
UV Index: 0
7 PM
Cloudy Night
21°
Feels Like
1
Humidity: 64%
Wind: 17 mph
UV Index: 0
8 PM
Cloudy Night
19°
Feels Like
0
Humidity: 63%
Wind: 17 mph
UV Index: 0
9 PM
Cloudy Night
19°
Feels Like
0
Humidity: 59%
Wind: 17 mph
UV Index: 0
10 PM
Cloudy Night
19°
Feels Like
0
Humidity: 57%
Wind: 18 mph
UV Index: 0
11 PM
Night
18°
Feels Like -2°
0
Humidity: 57%
Wind: 17 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

4 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.52 µg/m³
  • PM10: 2.38 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.2 µg/m³
  • PM10: 2.02 µg/m³
  • O3: 0.035 ppm
  • NO2: 4.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.98 µg/m³
  • PM10: 1.77 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.89 µg/m³
  • PM10: 1.67 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.86 µg/m³
  • PM10: 1.64 µg/m³
  • O3: 0.033 ppm
  • NO2: 4 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.87 µg/m³
  • PM10: 1.64 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.83 µg/m³
  • PM10: 1.6 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.74 µg/m³
  • PM10: 1.46 µg/m³
  • O3: 0.033 ppm
  • NO2: 3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.